4.3
(75)
2,705
riders
70
rides
Road cycling routes around Kortezubi are situated within the Urdaibai Biosphere Reserve, offering a diverse landscape for cyclists. The region features a mix of coastal and inland scenery, with routes transitioning from open estuary views to more compact inland valleys and green forests. Mountainous terrain is characteristic, shaping the area with climbs through narrow valleys that lead to panoramic viewpoints.
Last updated: August 8, 2026
4.8
(13)
169
riders
33.0km
01:41
550m
550m
Cycle 20.5 miles (33.0 km) through the Urdaibai Biosphere Reserve from Guernica to Elantxobe, featuring moderate difficulty and coastal view
3.0
(2)
416
riders
72.1km
03:25
850m
850m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

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4.0
(5)
280
riders
62.2km
02:47
540m
540m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
4.5
(2)
101
riders
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
53
riders
40.0km
02:10
830m
830m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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The castle is gigantic and beautiful to look at, unfortunately it has been surrounded by a construction fence for ages. Unfortunately, you can't see much. Whether the detour is worth it, everyone has to decide for themselves.
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Recreation of Picasso's famous painting. The original can be seen in Madrid.
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Definitely a highlight, but unfortunately, the castle was covered in scaffolding when I visited. The castle dates back to the Middle Ages but was later almost completely rebuilt.
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The medieval church of San Lorenzo de Zallobante stands out for its simplicity and its rural setting, reflecting the historical and cultural traditions of the area.
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When the Condor attacked, the residents of Guernica tried to protect the tree with their bodies because it is sacred to the Basques. Even today, elected politicians have to swear their loyalty to the Basque Country at an oak tree that stands a few meters away.
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Cool castle, graceful as it stands there. By the way, a really beautiful hiking area.
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Translated from English-Butrón is a castle in Gatika in the province of Biscay in northern Spain. It originally dates back to the Middle Ages, but its current appearance owes its current appearance to an almost complete reconstruction begun in 1878 by Francisco de Cubas. The castle looks like a fairytale, inspired by Bavarian castle models. Wikipedia (English)
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This small stone hermitage is of post-medieval origin, located in the Mungiarra neighborhood of Billela.
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There are over 60 road cycling routes around Kortezubi, offering a wide range of options for different skill levels. This includes 3 easy routes, 29 moderate routes, and 29 difficult routes, ensuring there's something for everyone.
Road cycling in Kortezubi, situated within the Urdaibai Biosphere Reserve, offers diverse terrain. You can expect routes that transition from open landscapes towards the estuary to more compact inland valleys and green forests. Mountainous formations are characteristic, with climbs through narrow valleys leading to rewarding panoramic views. Routes often follow the Oka River towards the Mundaka Estuary, providing scenic rides.
The Urdaibai Biosphere Reserve, where Kortezubi is located, generally offers pleasant cycling conditions for much of the year. Spring and autumn typically provide mild temperatures and beautiful scenery, making them ideal. Summer can be warm, especially in inland areas, while winters are generally mild but can be wet.
Yes, many of the road cycling routes around Kortezubi are designed as loops. For example, the Biscay Tour Trail: Gernika - Elantxobe Loop is a popular moderate circular route offering varied scenery. Another challenging loop is the Matxitxako Viewpoint – Jata Climb loop from Forua, which includes significant climbs to viewpoints.
The region is rich in natural beauty and viewpoints. The Balcony of Bizkaia offers one of the best panoramic views of the Urdaibai basin. You can also find highlights like the View from San Pedro de Atxarre and Talaia (276 m). Some routes also pass near the Oma Forest, known for its painted trees.
Absolutely. The area around Kortezubi is steeped in history. You can find the Monastery of Santa María de Zenarruza, a significant religious building. The Santimamiñe Cave, a UNESCO World Heritage site with prehistoric paintings, is also nearby, offering guided tours. While the cave paintings are accessed virtually, the site itself is fascinating. For more information on the cave, you can visit atlasobscura.com.
Yes, Kortezubi offers a few easy road cycling routes suitable for families or those looking for a more relaxed ride. While many routes involve climbs due to the mountainous terrain, there are options designed for less experienced cyclists. It's always recommended to check the route's difficulty and elevation profile before setting out.
Parking is generally available in and around Kortezubi, particularly in the main village areas or at designated starting points for popular routes. Many routes begin from towns like Gernika or Forua, where public parking facilities can be found. It's advisable to check specific starting points for parking availability.
Yes, as you cycle through the villages and towns within the Urdaibai Biosphere Reserve, you'll find opportunities to stop at local cafes and pubs. These establishments offer a chance to refuel with traditional Basque snacks and drinks, providing a welcome break during your ride.
The Kortezubi area and the wider Urdaibai region offer various accommodation options catering to cyclists, including rural guesthouses (casas rurales), hotels, and apartments. Many are accustomed to hosting outdoor enthusiasts and may offer facilities like secure bike storage.
The road cycling routes around Kortezubi are highly rated by the komoot community, with an average score of 4.7 stars from over 120 reviews. Cyclists often praise the diverse landscapes, from coastal views to green forests and valleys, as well as the challenging climbs that lead to spectacular panoramic viewpoints. The region's natural beauty and varied terrain are frequently highlighted.
While specific bike rental shops might not be directly in Kortezubi itself, you can typically find rental services in larger nearby towns within the Urdaibai Biosphere Reserve, such as Gernika or Bermeo. It's recommended to check with local tourism offices or search online for bike rental providers in the broader region.


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